Dominique Ponnau’s connection to T’ang Haywen is rooted in his deep appreciation for T’ang’s unique artistic vision. Ponnau wrote numerous articles about T’ang, which appeared in various publications, including:

- The exhibition catalogue for T’ang encre de chine at the Musée de Chambéry and Musée Savoisien in 1979.

- The exhibition catalogue Soixante-dix lavis acryliques et aquarelles for exhibitions at the Musée des Beaux-Arts de Quimper and Musée du Château Vitré in 1983.

- The monograph for T’ang’s retrospective show Le Tao de la Peinture at the Taipei Fine Arts Museum in 1997.

Ponnau also palyed a key role in organizing exhibitions of T’ang’s work, including a retrospective at the Guimet Museum in Paris. His writings and curatorial efforts helped bring T’ang’s fusion of traditional Chinese ink techniques and modern abstraction to a wider audience, solidifying his legacy as a pioneering figure in cross-cultural art.